Hopefully one of you kind souls will be able to assist, have 2000 750 V12 with a passenger electric window with a mind of its own. It will go down fine and then when it goes to come back up its fine but when it gets to the top it goes straight back down again. If you hold your finger on the switch then it doesnt do it but as soon as you let your finger off it drops again.
Am thinking control unit or similar any tests I can do myself to try and diagnose this?
Any help will be greatly appreciatted